397,221 in words
397,221
three hundred and ninety-seven thousand two hundred and twenty-one
397,221 is written three hundred and ninety-seven thousand two hundred and twenty-one.
Ways to write it
- As an ordinal
- three hundred and ninety-seven thousand two hundred and twenty-first
- Expanded form
- 300,000 + 90,000 + 7,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 3 | 300,000 |
| ten thousands | 9 | 90,000 |
| thousands | 7 | 7,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 11, 33, 12,037, 36,111, 132,407 and 397,221 (8 factors)
- First 10 multiples
- 397,221, 794,442, 1,191,663, 1,588,884, 1,986,105, 2,383,326, 2,780,547, 3,177,768, 3,574,989, 3,972,210
- Square
- 397,221 × 397,221 = 157,784,522,841
- Square root
- ≈ 630.25
- Sum of the digits
- 3 + 9 + 7 + 2 + 2 + 1 = 24
- Rounded to the nearest 10
- 397,220
- Rounded to the nearest 100
- 397,200
- Rounded to the nearest 1000
- 397,000
- Number before
- 397,220
- Number after
- 397,222
- In binary
1100000111110100101
Quick check
What number comes just after 397,221?
Show the answer
397,222
Is 397,221 even or odd?
Show the answer
Odd
What is 397,221 + 10?
Show the answer
397,231
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 397,221 in words?
397,221 is written "three hundred and ninety-seven thousand two hundred and twenty-one".
Is 397,221 a prime number?
No. 397,221 is a composite number, because it has more than two factors.
What are the factors of 397,221?
The factors of 397,221 are 1, 3, 11, 33, 12,037, 36,111, 132,407 and 397,221.